Apparatus for cooling molds of type-metal-slug-casting machines



Wl E. BURST AND C. C. GILLEO.-

APPARATUS FOR COOLING MOLDS 0F TYPE METAL SLUG CASTING MACHINES.

APPLICATION FILED SEPT- I5, I9I9.

1,389,573. PatentedSept. 6,1921.

NIIIIIIIIIIIIIIIIIIII I IIIIIIII IIIIIIII II IIIIIIIIIIII IIII `UNiTlzn f ASTATEsf WILLIAMl nrzsons'r AND CLARENCE C. CILLEoffoF GRAND Blurbs MICHIGAN;

APrARATUs Non COOLING kiiroLns-or TYrE-METAL-sLUG-CASTING iazrACruNnsfA I Specification of Letterslratent; Patentdsept, l y

'alipiication mee spfeinbr 1'5, i919. sensi Nt. zaposff l I asking a wider a v4itssie@:that if the `reinallfn.1er Of its height whereby a .Poor ,and practically i1,nserviceable"slug'` forpririting 55 To all whom t mag/iooncem: i t

Be it known that we, WILLIAME. Bons'r and CLARENCE C. GILLEO, Citizens of the United States of America, residing at Grand Rapids, in the County of Kent and State of i lalole others skilled in the art to which itappertains to make and use the same. y

' Thisunvention relates' to fan apparatus for coolingthe walls of vmold Cells ofA molds in type metal slug casting machines-. The

molten metal which is injected into the mold cells should, in order to producen ,perfect type face,"be. heated 'considerably above the'meltir'lofy pointof the metal so, that it Will flow freetly and completely filltli'e .interstices of the matrices and make perfect type Characters. On the other 5hand it has heretofore-been necessary'to keep the temperature of the molten metal lowin -order that the under face of the type slugs cast into the machine shall be as substantial aspossible, it kbeing apparent thatl this underl face of atype slug" isy the `last ,to cool and solidify `by reason of its being'neXt to the metal mouth piece and at the rear side of the mold wheel so that Vitsfreooling-lloy radiation is checkedto a considerable degree. In' practice,` particularly withl thethicker slugs, the molds, ina short time, become very hot and the rear under Aside .of the slugs WhenV ejected from the molds ,areV usually vmore or less porous and are usually 'Cast lwith along irregular cavityl or groove kmany times extending thefull length andwidth of the slug and leaving only a Veryjthinr edge at 'each side ofthe'slug to serve as a' support therefor when it is put intoA a form. YIn many instances this cavity Y, breaks y rtrating the runderlyside of'aslug made in a .machine equipped "with our invention. t Y Lik-ef referenee eharaeters refer toglikei 'i parts in the different views of the draw- 100 through the side of the slug and ,at lvarious points in the llength ofthe vslug there` isk no support or bearing for it .whenplacedi-n the form. Moreover, the ejecting slidefor the'slugs enters this cavity inthe Arear side ofk the yslug and its pressure vvagainst the metal which has partially solidified, Causes the sides of the slugs to bendoutwardly n purposes j is produced.

j-Ppsan apparatus rfor directly @001mg the sides of 1mold cells agains't which thefmolten `metalfeomes;sogthat 'when the metal strikes 60 the same' it is'finstantly 'Cooled fand solidi- `fied, thus practically*,eliminating thjeifpits vand cavities in' vthe underside lof the. slug I and'always leaving a substantial `and solid Side of the` slug to Vserve as `af base 'therefor 65 *whenfitQis placed nthel form.`y {Our invention contemplates the p'assa-ge .of alycurrent of air "through the mold'cell from'the rear `to thekpfront thereoffand ingtheproivis'ion of means, foraceomplishing this end@` As 70 afurther stepr in theloperation of lco'olin'g the mold the invention"contemplates raf shutting-ott' of the passage ofgair duringfthe` time thatthe, typ lSlllgfis :being ej evctedfwithv an l i immediate rush'of ai;l` through'fthe mold cell 75 as'soon as the ejector slidefis withdrawn.

F7011 an, understanding of the finvention,y ref- 'ere1ice mayfbe lhad to.thewfollowingy de-f seription.taken in vconnection with the ac` hompanying' drawings, in whichgf 'Figurel is a' front view of a Inoldfwheel illustrating the Inold receiving openings thereinLone of which isshown as-flledjwith `a `Inoldwand showing they yposition at which i" the'slugs are ejected fromfthe' molds land 85 lthe ejectonslidemguides back of thev mold wheel.

Fig.` 2 is a shown in Fig. 1. Y

Fig.r 3"is`a horizontal 'section rtali-en 90 stanti/ally onlth'e line B-QSof'FigjQ@ .Y Fig. 4 is' a side elevation' of a slug Such" as .is ordinarilymade in arnachine withoutfour 'invention 1 i' f y lFigo -is an'under planjvlew thereof; and 95 F ig. Gis a view similar? to Fig. 5V illus ings.'y i

The mold wheelfl ywith its four mold `residevview ofthe construction,l

well-known type such as is used in linotype machines. The mold 3 has a cell for receiving the molten metal as indicated at 4, the metal inA molten' form being; projected into this' cell from behind. The mold wheel turns to various` positions so that the molds are at times placed directly inr front. of the mouth piece which passes the metal to the mold cells and thento the ejector'mechanism for ejecting the slugs from the mold.

, AThe ejectingmechanism in machines of.

this character comprises two vertical guide plates 5 and 6 having a slot 7 between' 'them in which the ejector slide 8 is mounted,l the same being moved vforward, at proper intervals to pass into the 'mold cells 4 andV force the slug therefrom. The mechanism' for'operating the ejector slide "is no part of the present invention and is not illustrated in any way, being 'well-known' to thosel skilled in the art relating to vlinotype machines.

A pipe 9 is located alongside one of the guide plates, such as 6, and `v`reaches nearly to the front end thereof, being thenprovided with a bend 10 which is fastened to said plate 6 passing therethrough so that freecom'munication to the slot 7 is made. The usual po,- sitin of the ejectorV plate 8 is such that its front endlies justback of the point where the bend 10 passes 'through the plate 6. It isV apparent that with the pipe 9 leading to any suitable reservoir containing compressed air,.whenevera mold'` is movedfso that its cell comes directly in front of the ejector mechanism, a continuous current of. air is blown through the cell from the rear to the front. There vis only one time when this passage of air is interrupted. When the mold wheel is turned with `the mold carrying a slug to position in front of the ejector mechanism and the ejector slide 8 is moved forward during the operation of forcing the slug from the cell 4, the end of the bend at l() is covered and no air passes, but as soon as the slide 8 moves back to its normal position there is a quick rush lof air which passes through the mold cell with a consequent quick initial cooling of the wallsof the cell. The air continues to pass throughV the cell as long as the mold wheel remains in that position and the wallsof the cell are rapidly7 cooled so that when this mold is again moved "tothe metal mouth piece and molten metal forced into itsY cell, the metal coming against the walls of the cell is immediately cooled and solidified, particularly at 'therear portions of the walls of the cell as this is where the air first strikes and cools the same.

In Figs. 4 and 5 a representation is made of the way slugs made without this method look. The slugs 11in their under sides having irregular grooves 12 of considerable depth which are not only nearly as wide as the slugs at all points in the length thereof but many times break through to makeiry der "face of the slu regular and ragged openings at 14 at the edges -of the grooves and in any case the metal left isv very thin and hastoo little strength to sustain the pressure against the upper side of the slug when it is placed in a form and` used in printing. Moreover, it is apparentthat as the ejector slide 8 moves forward to push a slug of this character from the mold cell its frontuedge `'will enter the groove at 12 and have a tendency to force the adjacent sides of the slug outwardly makin it wider atthe bottom than it should be so t at it does not fill well into the form and is not-held securely by Aits engagement with the sides ofthe/adjacent slugs.- With our invention the slug produced is like that 'shown in under plan view in Fig.,6. The

groove 12a is narrow and "is fof much less depth vthan the groove at 12 shown in Fig. 5, while at each 'side of the groove solid bearing surfaces 15 are'made which 'support the iceable in actual practice,` 'While'verysimple so far as constructive Vvfeatures are concerned it is very efficient to' cool 'the molds particularly the wallsof the mold celland permit Va higher temperature for the type metal whichy will insure that the type face of everyslug is perfect while the opposite unis at all times of more than sufficient widt to make a secure and solid support for the slugs in the printing form.

We claim:

1. An apparatus lcompmsing a mold wheel adapted to carry a mold, an ejector guide back lof the mold andV having a passage adapted tojaline withv the opening inthe mold, and means for `carrying compressed air to said passage in said guide, substantially as andfor the purposes described.

2. In a linotype machineincluding a mold kwheel adapted to carry a mold having a slug casting opening therethroughand an ejector guide mounted back of the mold wheel having a passage therethrough adapted toA aline with the opening in the mold, of a pipe con nected with the ejector guide and communi-I.1

ing adapted to carry compressed air to said passage for passage therefrom through the opening in the mold, substantially as described.

i eating with the lpassage therein, said pipebef 3. An apparatus comprising a mold wheel adapted to carrya mold, an ejector guide back of the mold, an ejector slide carried in the guide adapted to pass through the mold cell,- and a pipe adapted to carry compressed .j

air connected to the guide at a point in front of the normal position of the slide therein,

to thereby carry compressed air into the into the ejector guide in front of the normal guide. and through the mold cell, substanposition of said ejector slide,substantial1y as l0 tznlly as described. and for the purposes described; 4. Anfapperatus comprsinge mold Wheel In testimony whereof We affix our signa- 5 adapted to carr a mold, an ejector guide tures.

back of the mol an ejector slide carried in f j the guide adapted to pass through the mold WILLIAM E. BORST. cell, and means for carrying compressed` air CLARENCE C. GILLEO. 

